• 1. Vascular Department, Xuanwu Hospital, Capital Medical University, Beijing 100034, China;;
  • 2. Regeneration Testing Laboratory, Xuanwu Hospital, Capital Medical University, Beijing 100034, China;;
  • 3. Department of Anatomy Histology and Embryology, Capital Medical University, Beijing 100034, China;
CHEN Bing, Email: cbobc99@yahoo.com.cn
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Objective  To establish chronic hindlimb ischemia model with suture-occluded method in rats, and then compare the effects of chronic hindlimb ischemia model with acute ischemia model.
Methods  Models of chronic hindlimb ischemia were established by using suture-occluded femoral artery method. The laser Doppler blood flow analysis and angiography were performed on day 7, 14, 28, 42, and 49 after operation, and then the rats were sacrificed after angiography, respectively, the quadriceps and gastrocnemius of contralateral and ipsilateral (surgical side) were gotten, which were tested by HE staining and α-actin immunohistochemistry staining, and then calculate arteriolar density. 
Results  There were no lameness and limb necrosis after operation in chronic hindlimb ischemia models. Laser Doppler analysis found that chronic hindlimb ischemia models were still maintained in ischemia state on day 49 after operation compared with acute ischemic models. The resluts of HE staining showed no acute necrosis and muscle fibrosis in chronic hindlimb ischemia model group. Chronic hindlimb ischemia models after operation did not appear obvious lameness and limb necrosis. The arteriolar density of quadriceps femoris on day 7 after operation in chronic hindlimb ischemia models were less than that in acute hindlimb ischemia models (0.015 2 vs. 0.036 4).
Conclusions  Compared with the commonly used acute ischemic models, the duration of arterial limb ischemia in chronic hindlimb ischemia rats, which were established by suture-occluded method, is longer and less likely to be affected by the compensatory mechanisms. So suture-occluded method can provide a new animal hindlimb ischemia model for further study of ischemia angiogenesis mechanism and treatment of severe lower extremity ischemia.

Citation: ANG Shengjia,CHEN Bing,LUO Tao,TONG Zhu,ZHANG Shuwen,SHI Xiaolin,XU Qing,ZHANG Bin,ZHANG Jian.. Preparation and Evaluation of Chronic Hindlimb Ischemia of Lewis Rat. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2012, 19(12): 1291-1297. doi: Copy